Creep damage model of rock with varying-parameter under the step loading and unloading conditions
The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage....
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| Published in | Scientific reports Vol. 11; no. 1; pp. 24057 - 10 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
London
Nature Publishing Group UK
15.12.2021
Nature Publishing Group Nature Portfolio |
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| Online Access | Get full text |
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| Abstract | The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient
R
2
was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. |
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| AbstractList | The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R2 was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil.The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R2 was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R 2 was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R2 was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. Abstract The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R 2 was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the total strain of rock was decomposed into elastic, viscoelastic, varying-parameter viscoelastic, and viscoplastic strains considering the damage. The four strains were connected in series to establish a new varying-parameter creep damage model that can characterize the creep characteristics of rock under step loading and unloading conditions as well as identify and verify the model parameters. The study results showed that the varying-parameter creep damage model could better describe the creep characteristics of rock under step loading and unloading conditions, significantly the non-linear both the strain and time of attenuation creep and accelerated creep. The model fitting curve was highly consistent with the experimental data, and the correlation coefficient R was greater than 0.98, which thoroughly verified the accuracy and rationality of the model. These findings can provide theoretical support for analyzing the deformation and long-term stability of rock and soil. |
| ArticleNumber | 24057 |
| Author | Li, Guanghe Wang, Dong Zhang, Shipeng Li, Yanfei Wang, Yanting Yang, Xiaoxu Wang, Laigui |
| Author_xml | – sequence: 1 givenname: Guanghe surname: Li fullname: Li, Guanghe email: li_7118@126.com organization: College of Mining, Liaoning Technical University – sequence: 2 givenname: Yanting surname: Wang fullname: Wang, Yanting organization: College of Mining, Liaoning Technical University – sequence: 3 givenname: Dong surname: Wang fullname: Wang, Dong organization: College of Mining, Liaoning Technical University – sequence: 4 givenname: Xiaoxu surname: Yang fullname: Yang, Xiaoxu organization: College of Mining, Liaoning Technical University – sequence: 5 givenname: Laigui surname: Wang fullname: Wang, Laigui organization: College of Mechanics Engineering, Liaoning Technical University – sequence: 6 givenname: Yanfei surname: Li fullname: Li, Yanfei organization: Shenhua Bor Xil Energy Co. Ltd – sequence: 7 givenname: Shipeng surname: Zhang fullname: Zhang, Shipeng organization: College of Mining, Liaoning Technical University |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/34911994$$D View this record in MEDLINE/PubMed |
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| CitedBy_id | crossref_primary_10_1016_j_rockmb_2023_100096 crossref_primary_10_3390_ijerph192315920 crossref_primary_10_1007_s00707_022_03416_y crossref_primary_10_1016_j_compgeo_2024_106214 crossref_primary_10_1007_s11043_023_09623_x crossref_primary_10_1016_j_compgeo_2023_105366 crossref_primary_10_3390_app12178451 crossref_primary_10_3390_app14010094 crossref_primary_10_1038_s41598_022_08488_3 crossref_primary_10_1016_j_heliyon_2023_e17529 crossref_primary_10_1038_s41598_023_31983_0 crossref_primary_10_1038_s41598_022_26548_6 crossref_primary_10_1016_j_fuel_2025_135102 crossref_primary_10_1007_s12665_023_11329_9 crossref_primary_10_1016_j_ijhydene_2024_08_032 |
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| Snippet | The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model, the... Abstract The creep characteristics of rock under step loading and unloading conditions were investigated in this study. Based on the generalized Burgers model,... |
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| SubjectTerms | 639/166/986 704/2151/431 704/4111 Correlation coefficient Humanities and Social Sciences multidisciplinary Rocks Science Science (multidisciplinary) Unloading Viscoelasticity |
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| Title | Creep damage model of rock with varying-parameter under the step loading and unloading conditions |
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